RC-Monster Forums - View Single Post - Li-Saver Questions?

BrianG · 04.10.2008, 12:09 PM

Well, since no one else in answering, I'll give it a shot:

Like most LVCs, it reads the total battery voltage (not individual cells). Being external, the Li-Saver is installed in series with the throttle signal. If the battery voltage falls below the set cutoff value, the LVC sends a throttle signal to the receiver to tells it to go into neutral (which is typically 1.5ms pulses).

I don't know what the voltage rating on the Li-Saver is, or if it automatically knows the cutoff value to use based on the battery voltage it sees.

I would definitely be careful about using one on each battery pack and then hooking the throttle cable connections in series. If the battery sense wire is opto-isolated, then it should work fine to use a Li-Saver on each series-connected pack. However, if the Li-Saver uses a common ground (where the throttle signal ground is common to the battery sense ground), hooking them up to series-connected battery packs and series on the throttle cable will likely burn up wires, PCB traces, LVBC components, or any combination of these.

	(#3)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	04.10.2008, 12:09 PM Well, since no one else in answering, I'll give it a shot: Like most LVCs, it reads the total battery voltage (not individual cells). Being external, the Li-Saver is installed in series with the throttle signal. If the battery voltage falls below the set cutoff value, the LVC sends a throttle signal to the receiver to tells it to go into neutral (which is typically 1.5ms pulses). I don't know what the voltage rating on the Li-Saver is, or if it automatically knows the cutoff value to use based on the battery voltage it sees. I would definitely be careful about using one on each battery pack and then hooking the throttle cable connections in series. If the battery sense wire is opto-isolated, then it should work fine to use a Li-Saver on each series-connected pack. However, if the Li-Saver uses a common ground (where the throttle signal ground is common to the battery sense ground), hooking them up to series-connected battery packs and series on the throttle cable will likely burn up wires, PCB traces, LVBC components, or any combination of these.